PMD401 Controller

Piezo LEGS® Controller PMD401

The PMD401 is a fully featured miniature controller for open loop and closed loop operation that can be easily stacked to form a multi-axis controller system.

• Nanometer resolution
• Closed loop control
• Open loop mode
• Servo mode
• Stackable boards for multi-axis
• Small form factor
• Slave amplifier to external motion controller via SPI interface
• Sub-nanometer resolution to the Piezo LEGS® motor
• General-purpose inputs/outputs – maximum 4 in and 3 out
• General-purpose inputs/outputs – maximum 4 in and 3 out

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Category: SKU: pmd401


Number of axes 1
Multi-axis supportYesUnits can be RS485-chained for multi-axis
True speed control NoOnly stepping rate controlled
Resolution8192 microstepsEach full step of about 5 μm is divided into 8192 steps
Maximum stepping rate

(Full step frequency – Hz)

1500Depends on motor
Supported encoders QuadratureABZ, 20 MHz counting
SSI8–30 bits, 330 or 130 kbps
BiSS18/26/32 bits, 330 kbps
Host communication Two-wire RS485Commands are sent in ASCII format, 115.2 kbps (n81)
Servo interfaceSPI16 bits (signed), max 15 Mbps
General I/O4 inDepending on encoder type and use of limit switches
3 out
Stacking connector6-pole, ERNI MicroStac 114711GND, 48 V, RS485
Motor connector5-pole, JST SM05B-SRSS-TBTwo connectors, parallel connection
Encoder/servo connector6-pole, JST SM06B-SRSS-TBInput for sensors or SPI servo interface
Limit switchYesInput for external limit switches
Communication connector3-pole, JST SM03B-SRSS-TBInput for RS485, or use stacking connector
Power connector2-pole, JST SM02B-SRSS-TBInput for 48 V supply, or use stacking connector
Power supply48 V DC, 20 W48 V DC ±5%
Dimensions 59 x 39 x 9.2mm



VersionData sheetsCAD files
PMD401PMD401 data sheetN/A
PMD401User Manual